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  1. #1
    Join Date
    Aug 2007
    Location
    Perth
    Posts
    35

    Default Joists, Stirrups and Structural Pine

    Hi All - looking at my options for my ground level deck.

    I have 85 x 19 Reeded Jarrah Decking.

    I have looked at the option of using steel joists - but I think this will be too expensive.

    I was going to have my joists at 450mm apart.

    What I don't know is the size of the sturctural pine is that I need (i.e is 90 x 45 sufficient) and also how far apart the stirrups need to be.

    I was just going to concrete in the stirrups.

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  3. #2
    Join Date
    Aug 2007
    Location
    Perth
    Posts
    35

    Default

    Quote Originally Posted by BaggyRed View Post
    Hi All - looking at my options for my ground level deck.

    I have 85 x 19 Reeded Jarrah Decking.

    I have looked at the option of using steel joists - but I think this will be too expensive.

    I was going to have my joists at 450mm apart.

    What I don't know is the size of the sturctural pine is that I need (i.e is 90 x 45 sufficient) and also how far apart the stirrups need to be.

    I was just going to concrete in the stirrups.
    By stirrups - I think I mean bearers. They are metal brackets you put the joists into and then concrete in.

  4. #3
    Join Date
    Sep 2006
    Location
    Behind that little door under the thicknesser...
    Posts
    644

    Default

    if you use 100x50x3 gal steel RHS joists you'll be able to use 1800 spacings between stirrups.
    if you use 90x45 treated pine you'll only be able to use 1500 spacings between stirrups.
    Spacing between the joists is the same for both....comes down to how many holes you want to dig and how much concrete you want to use
    Ours is not to reason why.....only to point and giggle.

  5. #4
    Join Date
    Dec 2004
    Location
    Northen Rivers NSW
    Age
    56
    Posts
    2,836

    Default

    I have jst finished mine, specs are inthe thread


    http://www.woodworkforums.ubeaut.com...598#post696598

    cheers


  6. #5
    Join Date
    Aug 2007
    Location
    Perth
    Posts
    35

    Default

    thanks guys - greatly appreciated

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